HK Army Vector PWR Insert Kit Color:Black The Shaft FR back has

The Shaft FR back has 3 windows that make it possible to quickly and easily identify which insert is being used as well as "Quick Threads" that allow the barrel to be attached and removed from your marker in less than half the time when compared to standard Cocker threaded barrels

These stylish bottle will make a great addition to any enthusiast's collection

Compatible with most other MP5 AEG Magazines

Piston Orings

HK Army Vector PWR Insert Kit Color:Black The Shaft FR back hasVector PWR Inserts Kit (Inserts + Case Only) At the core of the system are eight Vector PWR control inserts with exterior spiral fluting and each micro honed for maximum smoothness, optimal ball stabilization, and consistency across all paint sizes. When paired with the Hex PWR tip's tuned porting, you get a quieter shot, better grouping, and a true competitive advantage. Packaged inside the custom HK Army EXO Hard Shell Barrel Case, every component